An isotonic state exists within a patient's body fluids when the solute concentration of:

Intracellular fluid is greater than extracellular fluid

Extracellular fluid is less than intracellular fluid

Intracellular and extracellular fluid is equal

Interstitial fluid is less than the transcellular fluid

Answer and Explanation

The Correct Answer is C

Choice A reason: This is incorrect because intracellular fluid is greater than extracellular fluid in a hypertonic state, not an isotonic state. A hypertonic state is when the solute concentration of the extracellular fluid is higher than the intracellular fluid, which causes water to move out of the cells and shrink them.

Choice B reason: This is incorrect because extracellular fluid is less than intracellular fluid in a hypotonic state, not an isotonic state. A hypotonic state is when the solute concentration of the extracellular fluid is lower than the intracellular fluid, which causes water to move into the cells and swell them.

Choice C reason: This is correct because intracellular and extracellular fluid is equal in an isotonic state. An isotonic state is when the solute concentration of the extracellular fluid is the same as the intracellular fluid, which causes no net movement of water across the cell membrane.

Choice D reason: This is incorrect because interstitial fluid is less than the transcellular fluid in a situation of fluid imbalance, not an isotonic state. Interstitial fluid is the fluid that surrounds the cells, while transcellular fluid is the fluid that is contained in specialized cavities, such as cerebrospinal fluid, synovial fluid, or pleural fluid. The amount of transcellular fluid is normally very small compared to the interstitial fluid, but it can increase in certain conditions, such as edema, ascites, or hydrocephalus.

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Correct Answer is D

Explanation

Choice A reason: Respiratory alkalosis is caused by hyperventilation, which lowers the carbon dioxide levels in the blood and raises the pH. This is not likely to occur in a client with a nasogastric tube on low suction.

Choice B reason: Metabolic acidosis is caused by an excess of acids or a loss of bases in the body, which lowers the pH. This can occur in conditions such as diabetic ketoacidosis, renal failure, or diarrhea. This is not likely to occur in a client with a nasogastric tube on low suction.

Choice C reason: Respiratory acidosis is caused by hypoventilation, which raises the carbon dioxide levels in the blood and lowers the pH. This can occur in conditions such as chronic obstructive pulmonary disease, asthma, or sedative overdose. This is not likely to occur in a client with a nasogastric tube on low suction.

Choice D reason: Metabolic alkalosis is caused by a loss of acids or an excess of bases in the body, which raises the pH. This can occur in conditions such as vomiting, gastric suction, or diuretic use. This is the most likely acid-base disorder to occur in a client with a nasogastric tube on low suction, as the tube removes gastric acid from the stomach.

A. Low HCO3- and high PaCO2 B. Low PaCO2 and low HCO3- C. Low PaCO2 and high HCO3- D. High PaCO2 and high HCO3-

Correct Answer is C

Explanation

Choice A reason: This is incorrect because low HCO3- and high PaCO2 are signs of metabolic acidosis, not alkalosis. Metabolic acidosis is a condition where the blood pH is lower than the normal range of 7.35 to 7.45, due to an excess of acids or a loss of bases in the body.

Choice B reason: This is incorrect because low PaCO2 and low HCO3- are signs of respiratory acidosis, not alkalosis. Respiratory acidosis is a condition where the blood pH is lower than the normal range of 7.35 to 7.45, due to impaired gas exchange or hypoventilation, which causes carbon dioxide to accumulate in the blood.

Choice C reason: This is correct because low PaCO2 and high HCO3- are signs of alkalosis. Alkalosis is a condition where the blood pH is higher than the normal range of 7.35 to 7.45, due to a loss of acids or an excess of bases in the body. There are two types of alkalosis: respiratory and metabolic. Respiratory alkalosis is caused by hyperventilation, which lowers the PaCO2 in the blood. Metabolic alkalosis is caused by vomiting, diuretics, or excessive intake of antacids, which raises the HCO3- in the blood.

Choice D reason: This is incorrect because high PaCO2 and high HCO3- are signs of compensation, not alkalosis. Compensation is a process where the body tries to restore the normal pH by adjusting the levels of PaCO2 and HCO3- in the opposite direction of the primary disorder. For example, if the patient has metabolic alkalosis, the respiratory system will try to compensate by retaining carbon dioxide and lowering the PaCO2. If the patient has respiratory alkalosis, the renal system will try to compensate by excreting bicarbonate and lowering the HCO3-.

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An isotonic state exists within a patient's body fluids when the solute concentration of:

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Naxlex Comprehensive Predictor Exams

The nurse is caring for a client with a nasogastric tube that is attached to low suction. The nurse monitors the client closely for which acid-base disorder that is most likely to occur in this situation?

Correct Answer is D

Explanation

If your patient has a higher than normal pH (alkalosis), you would expect to also see:

Correct Answer is C

Explanation

An isotonic solution contains equal solute concentration on both sides.

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A nurse is collecting data from a patient who has dehydration. Which of the following findings should the nurse expect?

Lena Mason, who has diabetes, is admitted in a stuporous condition. Her blood gases show a pH of 7.33, PaCO2 of 40 mm Hg, and HCO3- of 20 mEq/L. What type of acid-base imbalance does this patient have?

Hyponatremia may be caused by:

The registered nurse reviews the result of the arterial blood gas values with the licensed practical nurse and tells the LPN that the client has respiratory acidosis. The LPN would expect to note which of the following on the laboratory result report?

The nurse is caring for a client with severe diarrhea. The nurse monitors the client closely, understanding that this client is at risk for developing which acid-base disorder?

The nurse is caring for a client with leukemia and notes that the client has poor skin turgor and flat neck and hand veins. The nurse suspects hypernatremia. Which sign/symptom would the nurse expect to note in this client if hypernatremia is present?